Valve for gas-engines.



No. 885,459. PATENTED APR. 21, 1908.

W. B. BNGLER & C. J. KRYZANOWSKY.

VALVE POR GASENGINES.

L1 TIoN FILED M 2' 1 APP 0A AY 2 I 907 2 sums-SHEET 1.

jl @l PATENTED APR. 2l, 1908. W. B. ENGLER 6r, C. J. KRYZANOWSKY.

VALVE POR GAS ENGINES. APPLICATION FILED MAY 22,1907.

2 SHEETS-SHEET 2.

//////// *llllllllllllllllll UNITED srarnsfrnnr OFFICE.

WILLIAM B. ENGLER AND CONSTANT '.T.I KRYZ-ANOWSKY, OF LAN SING1MICHIGAN.

'VALVE FOR GAS-ENGINES.

Specification of Letters Patent.

Patented April 21, 190s.

, Application med Hay 22, 1907. Serial o. 875,184.

To all whom .it may concern:

Be it known that we, WILLIAM B. ENGLER, a citizen of the United States,residin in the city of Lansing, county of In ham, tate of by We'areenabled to eliminate Wholly or in' art, the heavy fearing which hasheretofore been deemed indispensable in valves of this character.

'A further object of our invention is to devise a novel construction ofa piston valve, Y

the isto'ns of which are controlled b f light and reely movingoperatingvalves, W ereby material and space is economized and the lnainvalve is rendered more sensitive and more readily governed.

To the above ends, our invention consists of a novel construction ofvalve mechanism in which a valve, of any desired type, is provided vvitha piston which is yieldingly actuated in both directions preferably bylfluid pressure.

Our invention further consists of a novel construction of a bonnethaving a piston chamber therein, in which the piston of the valve ismovable, suitable ports and passages being provided communicatinr withthe piston chamber and with a suitabble fluid ressure supply, wherebythe movement o the piston and thereby the valve connected therewith maybe accuratel controlled at all times and under all working conditionswhich arise.

It further consists of the combination of a valve connected to and oerated by a piston mounted in a working cy inder, which latter isprovided with a cushioning chamber at,

each end in order to prevent the slamming of the valve 1n opening orclosing.

It further conslsts of other novel features of construction, all as willbe. hereinafter fully set forth.

For the purpose of illustrating our invention, we have shown 1n theaccompanying drawings 'those embodiments Whichbestillustrate theprinciples thereof and which have been found in practice to givesatisfactory and reliable results, although it is to be understood thatthe-various instrumentalities ofwliioh our invention consists can bevariously arranged and organized and that our invention is not limitedto the precise arrangementand organization of these instrumentalities asherein shown.

Fi -ure 1 re resents a sectional elevation of a va ve mec anismembodying our invention. Fig. 2 re resents a side elevation of a portionof the onnet, certain parts beineF roken away to more clearly show portsand passages not seen in Fig. 1. Fig. 3 represents a sectional elevationof another embodiment of our invention in which the piston is a casinghaving an in. atand outlet and into which the flange 2 of the spider 3extends, said spider 3 having a flange 4 extending therefrom which isadapted to be seated on the upper portion of the casing l, said flangebeing provided with apertures 5 therethrough which register with theinlet and outlet of the casing, whereby the liquid or fluid may passthrough the o ening 6 when the valve 7 is open'as indicate( in Fig. l,said valve 7 being suitabl beveled or otherwise adapted to coact wit 1the seat 8 carried, in the present instance, by the flange 2.

9 designates the valve stem which is movabl mounted in the spider 3 andextends wit in the bonnet 10, which latter is provided with aflange 1 1ada )ted to be seated on the flange 4 of' the spider 3, whereby theparts may be secured together by means of any suitable fastening devicessuch as bolts and nuts.

12 designates a ring or collar having preferably threaded enga ementwith the valve stem 9 between whic i and the body of the s ider 3 isinterposed a suitable spring`13.

means of the lockin nuts 15. The end of piston chamber 18, the endofjsaid valveV stem 9 having secured thereto .in any suitable manner, apiston 19 which may be provided with suitable packing if desired. In thepresent instance, we have shown the end 'of thestem 9 as `having areduced diameter which extends through the piston 19 and which isrovided with a suitable nut 20 whereby the piston and valve stem arerigidly secured'together. The end of the piston chamber 18 is closed bymeans of the cap or closure 21 which is secured thereto in any suitablemanner and in the present instance is provided with a depending flange22 which is apertured at 23 in order to permit a greater relativemovement of the piston 19 and nut 20.

24 designates the inlet and exhaust pas-y sage from the rear of thepiston, said passage communicating by means of a conduit 25 with a valvechamber 26 of the controlling valve into which a ort 27.0 ens, said portcommunicating wit a. suita le fluid pressure supply. The chamber 26 isprovided with an exhaust port 28, which together with the port 24 iscontrolled by a valve 29 which comprises in the present instance, twoheads of uniform diameter joinedby a neck 30.

-31 designates Aa spring intermediate the end of the valve and one endof the piston chamber 26. Exhaust ports 32 are provided which lead fromone end of the valve chamber 26 to the atmos here.

The valve stem 33 may e'operated by any suitable mechanism orarrangement lsuch asv a cam or eccentric geared to the main shaft of theengine or by an electric solenoid or other means best suited to thearticular engine on whichit is used, and since the same is old in theartand forms per se no part of our present invention, We have deemed itunnecessary to show the means for controlling the valve 29. A

When it is desired to open the valve 7, the valve 29 is moved by anysuitable means into the position seen in Fig. -1 whereupon fluidpressure may enter the inlet, pass vthrough the conduit 25 and inletport 24 and assuming that the valve is closed, the iston 19 will closethe inlet port 24 so that duid pressure will pass through the port 34,raising the ball 35 located in the chamber 36 against the tension of itsspring 37 and fluid pressure may pass through the ort 38, and groove 39,into the piston cham er 18, it being noted that the )ort 4() iscontrolled by means of an adjustable screw 41, the endv of which isadapted to entirely close said' port 40, if desired. As soon as thepiston 19 passes beyond the port 24, it will be ap arent that saidpiston is subjected to the ful pressure of the motive fluid. Thepressure in front of the piston escapes through the ports 42 which 1twill be noticed are located in rear of the forward end of the pistonchamber 18 Wherebv after the piston passes said ports, the air betweenthe piston and the wall 17 will form a cushion for the forward stroke ofthe piston. We also' provide a check valve comprising a ball 43 which isadapted to control the opening 44 which communicates with the internalchamber. of the bonnet 10, the chamber 45 in which said valve is seatedhaving the passages 46 communicating therewith and with the pistonchamber 18. As soon as valve 29 is actuated in a reverse direction, theinlet port 27 will be closed and the eX- haust port 28 will be` opened,whereby the iluid pressure in the rear of the piston 19 will passthrough the inlet 24 conduit 25, around the groove 30 of the piston andthence through exhaust port 28.

lt will be seen that as the piston moves rearwardly, the fluid willfollow the line of least resistance which will be through the port 24until after the piston has closed said port 24, when further escape ofthe fluid must be through port 40, the area of which is adjusta ed bythe valve 41. y It will thus be understood that the ports 40 and 47 areemployed to form a passage connecting the extreme upper portion of thepiston chamber with the annular groove `24 and thereby with the conduit25. It will thus be seen that the port 40 constitutes an outlet passagefor the airv have shown the valve as being adapted to be actuated inboth directions by fluid pressure and in this embodiment We have shown asimilar valve to that seen in Fig. 3. 49 designates ports which-communicate with the valve controlled passage 50 which is closed by thevalve 51, the stem 52 of which is mounted in the spider 53, said stemextending intothe bonnet 54 which is adapted to be secured with respectto the spider 53 and the main conduit in any suitable manner. The bonnet54 is rovided with a piston chamber 55 which is c osed by means of a cap56 having a depending flan e 57 provided withv a chamber 58 into whicthe nut 59, by means of which the p-iston 60 is secured to the end ofthe valve stem 52, is adapted to pass during the operation. 61designates the casing of the controlling valve from Whichleads theconduit 62 communicating by means ofvan inlet port 63 with the pistonchamber 55 and also communicating by means of .a conduit 64 the ' spring77 and passing through the with a port 65 which opens into thel istonchamber 55. 66 designates the inlet or the fluid pressure and 67 and 68designate exhaus-t ports. The valve 69 is provided with three heads, 70,71 and 72 of uniform diameter andthe necks 7 3 and 74. ln thisembodiment, in which we have shown a double act' ing piston, the fluidenters through the port 66 and assuming that the parte of the valve arein the position shown, the fluid pressure passes around the neck 74,through the conduit 62, inlet portV 63 and assuming that the iston 60 isat the rear end of its stroke, the uid pressure will pass through theort 7 5, raising the ball 76 against the tensione the ort 78 in rear ofthe pis-ton will cause sait piston to move forwardl into the ositionseen 1n Fig.

3, and the ex aust in ront of the piston takes lace through the port 65,conduit, 64, around)the 'groove73 and through exhaust port 68, therebycausing the valve to open.

When it is desired to close the valve, the valve 69 is actuated, so thatthe head 71 passes beyond the inlet port 66 whereby fluid pressure maypass through said inlet 66 around the groove 73, through conduit 64 inthe passage and assuming that the piston is ln'the position shown, theinlet rt 65 being closed by the piston 60, the uid pressure will passthrough the port 79, raising the ball 8() against the tension of thespring 81 and passing through port 82 beneat the piston will cause saidpiston to be moved rearwardly and the exhaust Jfrom the rear of thepiston taking place through port 63,' conduit' 62,- around the groove 74of the valve 69 and through exhaust port 67, it being noted that as soonas the piston closes the port 63, the lluid ress ure in rear of theiston at this time w' lbe trapped,'since the all 76 will close the ort75 and the rear stroke ofthe piston will lie properly cushioned, as isevident.

It will, ofcourse, be understood that whenf' the piston is movingorwardlyto open the valvel that after the same has passed the inlet port65, the fluid pressure between the lower end of the piston andthe innerend of the piston chamber 55 will be trapped-therein, since the ballwill close the inlet port 79, as will be a parent to those skilled inthis v art. It will t ius be apparent that our invention in its broadscope comprises a novel .construction of a valve mechanism in connectionwith which a single or double acting working cylinder may be employed inwhich means are valso employed for cushioning the piston at each end ofits stroke.

In the glresent instance, we have preferred to show t e inlet port 24 asopening into an annular groove communicating with the piston chamber 18and in Fig. 3, We have shown the inlet'port 63 as opemng into an annulargroove communicating with the piston chamber 55, but it is, of course,to be understood that these grooves may be omitted if desired and stille within the scope of our invention, although we have found 1tadvantageous in ractice to em loy a oonstructio such as is siown in thelrawings. y It will now be apparent from the fore oing that we havedevised a novel and usefu construction of 'valve and valve operatimechanism which embodies the features o advantage enumerated asdesirable in the' statement of invention and the above description andwhile we have, in the present instance, preferred to show thoseembodiments thereof which have been found 1n practice to givesatisfactory and reliable results, it is to be understood that they aresusceptible of modification 'in various p articulars without departingfrom the spirit and sco of the invention or sacrificing any of itsadiantages.

It is further to be understood that we do not intend to limit the fluidpressure on the u per surface of the piston at the beginning oi) thestroke. The velocity of the piston 19 being low at starting due to theinertia of the valve, iston and other adjuncts, suiicie-nt iiuid w11pass through the tain substantially the full uid pressure, it beingunderstood that the port 40 may, 1f desired, be nearly or comp etelyclose( by n the valve 41. The check valves, such as 35 or 76, preventthe air which is being compressed in the rear of the piston from escap-1n but on the forward stroke these check va ves permit the fluid tofreely ass to the upper portion of the piston cham er, as will beapparent to those skilled in this art.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent, isz- 1. ln a device of the characterdescribed, the combination with a valve having a stem therefor, of abonnet having a piston chamber into which said valve stem extends, anunapeitured iston carried b said stem, valve control ed means for amitting4 fluid pressure to advance said piston including a er passageleading to the rear of said cham and provided with an inwardly openingcheck valve, means for returning said piston,

ort 34 to mainand means for cushioning the piston at each i end of itsstroke.

2. In a device of the character described, the combination of a valvehaving a stem, a spider in which said stem is mounted, a bonnet havingapiston chamber into which .said stem extends, a iston carried by saidstem, valve controlle means for admitting fluid pressure to move saidpiston in one direction, a check valve controllin the initial admissionof fluid ressure to advance said piston and located 1n said bonnet,means for returning. said piston, and means for cushionlng said pistonat each end of lts stroke.

leo

sages.

. opening into the side Wall of s aid c amber provided with a (pistonchamber, a piston in -tending into said chamber, a piston secured 3. Ina device of the character described, the combination with a valve havinga stem,` of a spider in which said stem is mounted, a bonnet throughwhich said stem extends and said chamber an secured to said stem, portsand passages for the fluid pressure leading to said chamber, means forleading live Inotive fluid to either end of said chamber, one of saidpassages being automatically controlled and means for cushioning thepiston at each end of its stroke. v

4. In a device of the character described, the combination With a bonnethaving a piston'chamber therein, of a valve stem exto said stem, saidchamber having passages leading thereto through the side wall near eachend which serve aternately las inlet and exhaust, passages leadingthrough said first assages and o ening into the plston chamher at eachen in rear of the piston, and a check valve in each of said passages.

5. In a device of the character described, the combination with a valvebonnet having a valve stem extending thereinto, of apiston secured tosaid stem, a combined inlet and exhaust ort opening into said chamberthrough tiie side wall thereof near each end, a passage leading rom eachof saidirst named l assages and opening into the piston cham- Ber ateachend thereof, a check valve in each of said passages, and valvecontrolled means for regulating the inlet and exhaust of motive iuidthrough said first named pas# 6. In a device of the character described,the combination of avalve casing,aspider, a Valve having a stem guidedin said spider, and a bonnet having a iston chamber into which said stemexten s,\a piston in said chamber secured to said stem, a assage neareach end thereof adapted to serve alter-t nately for inlet andexhaust,valve controlled means communicating with each of said passagesand said piston chamber at each end, and an independent valveforcontrolhng i the inlet and exhaust of motive iii-uid tosaid sidepassages.

. 7. In a device of the character described,

the combination With-sa bonnet having a 4piston chamber therein', "of avalve stem extending into said chambeiga piston secured vto said stem, apassage opening into said iston chamber` through the side Wall thereo ata suitable` distance from each end, a passage leadlng from each of saldpassages and opening into said piston chamber at each end.

thereof, an inwardly opening check valve in each of said passages, andvalve mechanism for controlling the inlet and exhaust of mo tlve fluidto and from said side passages.

8. In a device of the character described,

the combination with a valve bonnet having a pistonchamber. therein, ofa valve stem extending into said bonnet', a piston secured to checkvalve in each of said passages, and a valve controlling admission andexhaust of motive liuid to said inlet passages.

9. In a device of lthe character described, the combination with abonnet having a piston chamber therein, of a valve stem extende f inginto said chamber, a piston secured to said stem, an exhaust portthrough the side wall of said chamber near one end thereof, an inletport through the side Wall of said chamber near the other end thereof, apassage leading from said side inlet passage and opening into the pistonchamber at the rear end thereof, an inwardly opening 'check valve insaid passage, and means for controlling admission and exhaustof motiveHuid to and from said inlet port.

, WILLIAM B. ENGLER.

CONSTANT J. K-RYZANOWSKY.

lVitnesses:

MAx W. MUELLER, ARTHUR A. DoBsoN.

